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Dyna – Engine & Gaskets

Browse engine & gaskets selected for Harley-Davidson Dyna motorcycles. Available items span engine components and gaskets, seals and service parts, helping you compare parts intended for different jobs. Confirm model coverage, key measurements and any supporting parts required on the individual listing.

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£43.89
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£43.36
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£43.36

Colony Panhead Rocker Cover Screw Kit. Chrome Hex. Long – 1948–1965 Panhead

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Colony Panhead Rocker Cover Screw Kit. Chrome Hex. Long – 1948–1965 Panhead Chrome plated. OEM style reproduction hex bolt with flange. Used to mou...

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£43.89
£43.36
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£43.36
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£26.28 - £26.28
£26.28
£30.29
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£30.29

Colony Oil Pump Mount Kit, OEM Style – 1968–1978 Big Twin

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Colony Oil Pump Mount Kit, OEM Style – 1968–1978 Big Twin Chrome hex Fitment 68-78 Big Twin (NU) Product Details Brand: Colony Category: MOTOR P...

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£26.28 - £26.28
£26.28
£30.29
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£25.18
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£25.18

Jims Lock Nuts for Tappet Adjuster Screw – 1915–1985 All H-D

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Jims Lock Nuts for Tappet Adjuster Screw – 1915–1985 All H-D 9/32"-32 threaded. Fits all tappets that take 9/32-32 threaded adjusting screws. Repla...

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£21.70 - £21.70
£21.70
£25.18
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£25.18
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£62.36
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£62.36
£57.07
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£57.07

Colony Crankcase Bolt Kit – 1979–1995 Big Twin

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Colony Crankcase Bolt Kit – 1979–1995 Big Twin Chrome hex Fitment 79-95 Big Twin (NU) Product Details Brand: Colony Category: MOTOR PARTS > C...

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£62.36
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£62.36
£57.07
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£57.07
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£61.55
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£61.55
£58.60
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£58.60

Gardner-Westcott Crankcase Bolt Kit, Hex – 1979–1995 Big Twin

Out of stock

Gardner-Westcott Crankcase Bolt Kit, Hex – 1979–1995 Big Twin Mounts crankcase halves together. Kits come complete with washers; studs and nuts whe...

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£61.55
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£58.60
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£58.60
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£6.17 - £6.17
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£6.67
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£6.67

Colony Oil Pump Mount Kit, OEM Style – 1937–1967 Big Twin

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Colony Oil Pump Mount Kit, OEM Style – 1937–1967 Big Twin Black parkerized; nut & washers; special 1/4-24 HD thread Fitment 37-67 Big Twin (NU)...

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£6.17 - £6.17
£6.17
£6.67
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£7.73
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Colony Oil Pump Mounting Kit, OEM Style – 1937–1967 Big Twin

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Colony Oil Pump Mounting Kit, OEM Style – 1937–1967 Big Twin Chrome nut & washer set; with special 1/4-24 hd thread Fitment 37-67 Big Twin (NU)...

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£7.14 - £7.14
£7.14
£7.73
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£22.60
£26.04
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£26.04

Colony Cyl Base Nut Kit – 1930–1978 Big Twin

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Colony Cyl Base Nut Kit – 1930–1978 Big Twin Hex chrome Fitment 30-78 Big Twin (NU) Product Details Brand: Colony Category: MOTOR PARTS > CYL...

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£22.60 - £22.60
£22.60
£26.04
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£26.04
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£20.95
£24.15
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£24.15

Colony Tappet Block Mount Kit. OEM Style, Chrome – 36-E53 Big Twin; 1937–1973 45" Flathead

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Colony Tappet Block Mount Kit. OEM Style, Chrome – 36-E53 Big Twin; 1937–1973 45" Flathead 1/4"-24 threaded. OEM reproduction tappet guide hardware...

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£20.95 - £20.95
£20.95
£24.15
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£28.10
£35.44
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£35.44

Colony Cyl Base Nut Kit – 1978–1984 Big Twin

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Colony Cyl Base Nut Kit – 1978–1984 Big Twin Chrome; acorn milled hex; with o washers Fitment 78-84 Big Twin (NU) Product Details Brand: Colony ...

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£28.10 - £28.10
£28.10
£35.44
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£35.44
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£35.01
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£34.59
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£34.59

Colony High-torque – 1952–1985 K; XL Sportster; 45" Flatheads

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Colony High-torque – 1952–1985 K; XL Sportster; 45" Flatheads Chrome Fitment 52-85 K; XL Sportster; 45" Flatheads (NU) Product Details Brand: Col...

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£35.01
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£34.59
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£34.59
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£32.57
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£30.24
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£30.24

MCS Upper Pushrod Cover Kit. Pan & XL – 1948–1965 Panhead; 57-E79 XL Sportster

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MCS Upper Pushrod Cover Kit. Pan & XL – 1948–1965 Panhead; 57-E79 XL Sportster Chrome plated. OEM style reproduction; clip type; upper pushrod ...

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£32.57
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£32.57
£30.24
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£23.24
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£23.24
£22.74
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Colony Sprocket Shaft Oil Seal – 1940–1954 Big Twin

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Colony Sprocket Shaft Oil Seal – 1940–1954 Big Twin Includes snap ring. OEM replacement reference 24776-40 (early 241-40). Fitment 40-54 Big Twin (...

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£23.24
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£23.24
£22.74
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£47.05
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£46.39
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£46.39

Jims Camshaft Bushing. Undersize. 70-99 B.T – 1970–1990 Big Twin

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Jims Camshaft Bushing. Undersize. 70-99 B.T – 1970–1990 Big Twin With a smaller I.D. of .9875" (standard is 1.000") with a standard 1.2015" O.D. Us...

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£47.05
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£47.05
£46.39
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£46.39
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£41.13
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£41.13
£40.55
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£40.55

Jims Camshaft Bushing. +.005". 70-99 B.T – 1970–1999 Big Twin

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Jims Camshaft Bushing. +.005". 70-99 B.T – 1970–1999 Big Twin Standard O.D. is 1.2015". Standard I.D. is 1.000". Machined from solid bronze bar. Ea...

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£41.13
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£41.13
£40.55
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£41.13
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£40.55
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Jims Camshaft Bushing. Std. 70-99 B.T – 1970–1999 Big Twin

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Jims Camshaft Bushing. Std. 70-99 B.T – 1970–1999 Big Twin Standard 1.000" ID; 1.2015" OD. Machined from solid bronze bar. Each bushing is machined...

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£41.13
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£41.13
£40.55
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£40.55
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£274.29
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£274.29
£270.47
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£270.47

MCS Connecting Rod Assembly 41-73 B.T – 1941–1966 74" (1200cc) Panhead…

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MCS Connecting Rod Assembly 41-73 B.T – 1941–1966 74" (1200cc) Panhead… Complete kit. Includes crankpin; crankpin nuts; rod rollers and retainers. ...

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£274.29
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£274.29
£270.47
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£270.47
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£38.56
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£38.56
£38.01
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£38.01

Jims Camshaft Bushing, Outer. STD. 36-69 OHV – 1936–1965 Knuckle/Panhead; 1966–1969…

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Jims Camshaft Bushing, Outer. STD. 36-69 OHV – 1936–1965 Knuckle/Panhead; 1966–1969… 1.0035" outside diameter. Cam cover bushing. Machined from sol...

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£38.56
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£38.56
£38.01
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£38.01
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£105.13
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£105.13
£103.65
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£103.65

Jims Connecting Rod Race Set – 1941–1999 Big Twin

Only 1 left!

Jims Connecting Rod Race Set – 1941–1999 Big Twin Made from 52100 aerospace quality Timken® bearing stock. OEM reproduction for rear female 24345-3...

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£105.13
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£105.13
£103.65
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£103.65
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£76.75
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£76.75
£72.08
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£72.08

MCS Panhead Rocker Cover D-ring Kit. Chrome – 1948–1965 Panhead

Out of stock

MCS Panhead Rocker Cover D-ring Kit. Chrome – 1948–1965 Panhead Chrome plated die-cast aluminum reinforcement D-rings. Complete with chrome plated ...

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£76.75
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£76.75
£72.08
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£72.08
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£97.83
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£97.83
£88.26
£88.26 - £88.26
£88.26

Jims Oil Pump Driven Gear. 24T – 1973–1999 Big Twin

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Jims Oil Pump Driven Gear. 24T – 1973–1999 Big Twin OEM style replacement. Fits S&S; S&S HVHP & OEM style oil pumps. Fitment 73-99 Big ...

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£97.83
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£97.83
£88.26
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£88.26
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£34.89
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£32.11
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£32.11

MCS Evo Spark Plug & Head Bolt Cover Kit. Chrome – 1986–1999 Big Twin

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MCS Evo Spark Plug & Head Bolt Cover Kit. Chrome – 1986–1999 Big Twin Chrome plated steel construction. Gives the finishing touch to your cylin...

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£32.11
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£139.19
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£139.19
£137.24
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£137.24

Jims Crankpin L81-99 XL. Std – L1981–1999 XL Sportster

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Jims Crankpin L81-99 XL. Std – L1981–1999 XL Sportster Standard O.D. 1.250". 3-hole oiling design. Use JIMS 978254 crankpin nuts. Use 517951 (Repl....

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£139.19
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£139.19
£137.24
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£137.24
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£9.85
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£9.85
£9.37
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£9.37

MCS Thrust Washer Camshaft. .090" – 1936–1999 Big Twin

Out of stock

MCS Thrust Washer Camshaft. .090" – 1936–1999 Big Twin Shims used to achieve correct cam end-play. Approx. dimensions: 1.062" OD; .820" ID. Fitment...

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£9.37
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